Wire rope.



G W. WESTGARTH.

WIRE ROPE.

APPLICATION FILED APR.12, 1911.

Patented Dec.12, 1911.

GEORGE WALTON WESTGARTH, OF CARDIFF, ENGLAND.

WIRE ROPE.

Specification of Letters Patent.

Patented Dec. 12, 1911.

Application filed April 12, 1911. Serial No. 620,642.

To all whom it may concern:

Be it known that I, GEoRcE WALTON WEST- GARTH, a subject of the King of Great Britain, residing at 145 Cathedral road, Cardiff, in the county of Glamorgan, England, have invented certain new and useful Improvements in Wire Rope, of which the following is a specification.

The object of this invention is to manufacture wire rope, composed of strands of wires, with a core formed with hemp and a number of specially shaped wires, which will provide for the displacement of the hemp, which takes place when pressure is applied to close the rope.

Figure 1 of the accompanying drawings is a diagram representing a transverse section of a rope embodying this invention, the strands being somewhat separated for the purpose of illustration. Fig. 2 is a diagram showing one outer strand and one dished strand separated and indicating another form of dished strand. Fig. 3 is a diagram representing one outer strand and one dished strand separated and indicating still another form of dished strand.

This wire rope comprises an inner central core A composed of hemp or equivalent vegetable fiber or compressible material, a series of outer strands B composed of wire and a series of intermediate dished strands C. The dished strands C are disposed spirally around the core A and their outer faces 0 are dished or concaved and their inner faces 71 are preferably convex as shown in Fig. 1 forming inwardly beveled edges 6. The outer cylindrical wire strands B are severally disposed in the concave outer surface of the dished strands C. The inwardly beveled edges of the dished strands C form V-shaped interstices p at the joints between said strands and when the outer strands B are drawn tightly around the core A, the intermediate strands C are pressed into the body of said hempen core and the displaced hemp will be pressed into said interstices. In Fig. 2 the inner face is of the dished strand is convex to a point and in Fig. 3 the inner face of said strand is shown as uniformly convex. I take a number of these specially shaped wires, and lay them around a cord of hemp to complete my core, over which I then lay the strands in the usual manner to complete the rope.

Obviously there are certain possible modifications in this specially shaped wire, such as illustrated by Figs. 2 and 3, which might provide for the displacement of the hemp, but I prefer the section shown in Fig. 1, because it is more uniform in thickness.

What I claim is 1. A rope comprising a central hempen core, an annular series of wire strands concave on their outer faces and spirally disposed around said core, and a series of wire strands resting respectively in the concave faces of said concave strands.

2. A rope comprising a central hempen core, an annular series of wire strands concave on their outer faces and spirally disposed around said core, and a series of wire strands resting respectively in the concave faces of said concave strands, said concave strands having inwardly beveled edges forming openings between the joints into which said core is pressed.

3. A rope comprising a central hempen core, an annular series of wire strands concave on their outer faces and convex on their inner faces and spirally disposed around said core, and a series of wire strands resting respectively in the concave faces of said concave strands.

4:. A rope comprising a central hempen core, an annular series of wire strands concave on their outer faces and convex on their inner faces and spirally disposed around said core, and a series of wire strands resting respectively in the concave faces of said concave strands, said concavo-convex strands having inwardly beveled edges forming openings between the joints into which said core is pressed.

In witness whereof I have hereunto set my hand in presence of two witnesses.

GEORGE WALTON WESTGARTH.

Witnesses:

BEssrE L. ADAMS, ALBERT S. PHILLIPS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

